Southbend SB1269 Manuel utilisateur

MODEL SB1269

TAPER ATTACHMENT

Instruction Sheet

This taper attachment is heavy! Get

assistance when installing this accessory on

the lathe. Wear heavy duty leather boots for

foot and toe protection, and keep hands and

fingers away from all pinch points. Ignoring

this warning can lead to a severe crushing

injury or finger amputation!

•Fits Lathe Models ..14" x 40" SB1012, SB1013

................................16" x 60" SB1014, SB1015

............................... 16" x 40" SB1037, SB1038

•Taper Per Inch Range.............................0–18"

•Minor Inch Scale Divisions....................0.010"

•Major Inch Scale Divisions....................0.020"

•Taper Angle Range .................................0–10°

•Minor Taper Scale Divisions .......................1⁄2°

•Major Taper Scale Divisions.........................1°

•Maximum Length of Taper..................... 12

1⁄4"

•Taper Adjustment Knob ............................Yes

•Construction.............................................Steel

•Unit Weight............................................ 78 lbs

•Origin................................................... Taiwan

The Model SB1269 taper attachment was

designed to fit onto a series of South Bend

lathes. Shown in Figure 1, is a Model SB1012

lathe that is fitted with the Model SB1269 taper

attachment.

Figure 1. Model SB1269 installed.

Taper attachment installed

on rear side of lathe

Introduction

If you need help with your new item, contact

us at: (360) 734-1540 •FAX: (360) 676-1075

This taper attachment mounts quickly to the

back bed way of your lathe. Accurate tapers of up

to 12" can be produced without repositioning the

attachment or having to offset the talstock.

The Model SB1269 features scales at both ends,

reading inches-per-foot and degrees. An angle

adjusting knob with fine threads achieves

exacting control when setting tapers.

Another feature is the ability to use the taper

attachment without disengaging the cross slide

nut. This design allows the taper attachment to

be functional at any time by simply tightening

the two deadman-clamp cap screws, which lock

the deadman-clamp to the rear lathe way.

Speciﬁcations

Identiﬁcation

Serious personal injury could occur if you

connect the lathe to power before completing

the installation process. DO NOT connect

power until instructed to do so later in this

manual.

Untrained users have an increased risk of

seriously injuring themselves with this lathe

accessory. Do not operate lathe until you have

understood this entire manual and received

proper training.

Dead Man

Arm

Taper

Knob

Taper

Scale

Dead Man

Clamp Travel

Stop

Dovetail

Gib Gib

Adjustment

Screws

Main

Housing

Table

Way

Arm Clevis

Figure 2. Identification.

-2-

For Product Mfg. Since 1/10

Model SB1269 INTRODUCTION

Inventory

When you are completely satisfied with the

condition of your shipment, you should inventory

the contents.

Inventory (Figure 3) Qty

A. Cap Screws M10-1.5 x 40mm

(Taper Attachment Mounting) ...................... 4

B. Taper Attachment Assembly.........................1

C. Tapered Pins 8.7 x 7.7 x 47mm .....................2

D. Copper Anti-Score Plug .................................1

E. Deadman Clamp Assembly ...........................1

F. Deadman Arm and Clevis .............................1

Unpacking

This item was carefully packaged to prevent

damage during transport. If you discover any

damage, please immediately call Customer

Service at (360) 734-1540 for advice. You may

need to file a freight claim, so save the containers

and all packing materials for possible inspection

by the carrier or its agent.

Figure 3. Model SB1269 inventory.

Things You'll Need

This attachment is intended to be a permanent

installation. Installation will take approximately

1.2 hours and require the following items:

For Assembly

• Cotton Rags

• Mineral Spirits

• SafetyGlasses

• Oil Can with any Basic Machine Oil

•Assistant

•Open End Wrench (17mm)

•Hex Wrenches (3, 4, 5, 6, and 8mm)

•Tapered Drill Bit (8mm)

•SafetyGlasses

•Oil Can with Pressure Tip

•Dila Indicator with Magnetic Base

•Phillips Screwdriver, #2

•Hammer

•Drill Bit, 19⁄64"

•Spiral Pin Reamer, Industrial Size: 6

—Small End Diameter: 0.2773"

—Large End Diameter: 0.3540"

For Product Mfg. Since 1/10 Model SB1269

-3-

PREPARATION

The unpainted surfaces are coated with a heavy-

duty rust preventative that prevents corrosion

during shipment and storage.

This rust preventative has been a close ally

and guardian since this item left the factory.

If the unpainted surfaces are free of rust, then

be thankful that the rust preventative did its

job...and try to stay thankful as you clean it off,

because it can be challenging to remove if you are

unprepared and impatient.

Plan on spending time cleaning and removing

the rust preventative. The time you spend doing

this will reward you with smooth sliding parts

and a better appreciation for the proper care of

the unpainted surfaces.

Although there are many ways to successfully

remove the rust preventative, these instructions

walk you through what works well for us.

Before cleaning, gather the following:

• DisposableRags

• Cleaner/degreaser

• Safetyglasses&disposablegloves

Note: Automotive degreasers, mineral spirits

orWD•40canbeusedtoremoverust

preventative. Before using these products,

though, test them on an unnoticeable area

of a painted area to make sure they will not

damage it.

Basic steps for removing rust preventative:

1. Put on safety glasses and disposable gloves.

2. Coatallsurfacesthathaverustpreventative

with a liberal amount of your cleaner or

degreaser and let them soak for few minutes.

3. Wipe off the surfaces. If your cleaner or

degreaser is effective, the rust preventative

will wipe off easily.

Note: To clean off thick coats of rust preventative

on flat surfaces, such as beds or tables, use

aPLASTICpaintscrapertoscrapeoffthe

majority of the coating before wiping it off

withyourrag.(Donotuseametalscraperor

it may cause scratches.)

4. RepeatSteps 2–3 as necessary until clean,

then coat all unpainted surfaces with a

quality metal protectant to prevent rust.

GAS

Gasoline and petroleum

products have low flash

points and can explode

or cause fire if used for

cleaning. Avoid using these

products to remove rest

preventative.

Many cleaning solvents are

toxic if inhaled. Minimize

your risk by only using

these products in a well

ventilated area.

Avoid chlorine-based solvents, such as

acetone or brake parts cleaner that may

damage painted surfaces. Always follow the

manufacturer’s instructions when using any

type of cleaning product.

Cleaning & Protecting

-4-

For Product Mfg. Since 1/10

Model SB1269 PREPARATION

Installation

To install the taper attachment:

1. DISCONNECT LATHE FROM POWER!

2. With the assistance of a helper and using

a 6mm hex wrench, remove the four cap

screws holding the splash guard on the rear

of the lathe.

3. Using a 5mm hex wrench, remove the two

leadscrew end-cap cap screws shown in

Figure 4.

Note:Make sure to keep the correct race with

its original bearing, and do not hammer on

the casting or chisel the inner races out. The

inner race has a loose ﬁt. If it is difﬁcult to

remove from its seat, be patient and spray

some penetrating oil into the bore and

carefully work the race out from the grease

suction that is holding it. You can also soak

the casting in mineral spirits to break this

suction.

7. Using a #2 Phillips screwdriver, remove

the eight ﬂat head screws and the taper

attachment top plate (Figure 6).

Figure 6. Top plate removal.

8. Using a 5mm hex wrench, loosen the slide

block set screw, as shown in Figure 7.

Figure 7. Slide block removal.

Figure 4. Lead screw end-cap.

Lock

Nut

Set

Screws

Leadscrew

End-Cap

Set

Screws

Cap

Screws

4. Using a 3mm hex wrench, remove the four

set screws (Figure 4) from the saddle.

5. Using a 17mm wrench, remove the lock nut

(Figure 4) from the end of the lead screw.

6. Slide the end-cap off the lead screw. Make

sure that the inner and outer race shown in

Figure 4 do not stick to the end-cap.

Figure 5. End-cap removal.

Inner

Race

Outer

Race

End

Cap

For Product Mfg. Since 1/10 Model SB1269

-5-

PREPARATION

9. Lift out the slide block without losing the

copper anti-score plug (Figure 8).

12. Clean the bearings and races with mineral

spirits, then dry and repack them with white

lithium grease.

13. Install the bearings and races onto the

leadscrew in the order shown in Figure 10.

Figure 8. Slide block copper anti-score plug.

10. Apply a dab of multi-purpose grease to the

copper plug to prevent it from falling out

when handling the slide block.

Note:This copper plug prevents the set screw

from scoring the main pivot pin when the

taper attachment is being used.

11. Using a 5mm hex wrench, remove the two

cap screws that retain the slide block, and

remove the slide block end-cap as shown in

Figure 9.

Copper

Anti-Score

Plug

Figure 9. Slide block end-cap removal.

Slide

Block

End

Cap

14. Using a 17mm wrench, thread the lock nut

onto the lead screw until the bearings are

slightly preloaded, and the slide-block end

cap has zero end play.

15. Using a 5mm hex wrench, secure the

slide block onto the endcap with the two

previously removed cap screws, as shown in

Figure 11.

Figure 10. Slide block end-cap installation,

(bearings shown without grease for clarity).

Bearing

Races

Bearing and

Race Orientation

is the Same as

Shown to the Left

16. Pull or push the cross slide assembly so the

center of the pivot pin bore is 4

1⁄2" from the

carriage face, as shown in Figure 11.

Figure 11. Slide block installation.

End Cap

⁄

Slide Block

-6-

For Product Mfg. Since 1/10

Model SB1269 PREPARATION

Figure 15. Top plate installation.

22. Reinstall the top plate as shown in Figure

15.

17. Make sure the copper plug is still inside of

the slide block.

18. With the help of an assistant, raise the taper

attachment underneath the slide block, so

the pivot pin slides into the pin bore in the

slide block (see Figure 12).

19. With your assistant aligning the taper

attachment mounting holes, use an 8mm

hex wrench to tighten the four mounting cap

screws and secure the taper attachment to

the carriage face (see Figure 12).

20. Using a 4mm hex wrench, snug the slide

block set screw so the copper plug is slightly

preloaded against the pivot pin (see Figure

13).

Figure 12. Taper attachment installation.

Mounting

Cap Screw

Figure 13. Pin adjustment.

Pivot Pin

Pin and Pin

Bore

21. Apply drops of oil liberally at all four way oil

ports, both slide block ways, and the pivot

pin shown in Figure 14.

Figure 14. Lubrication locations.

Ball

Oilers

Slide Block Ways

Pivot Pin

Ball

Oilers

23. Slide the deadman clamp onto the lathe

way, thread the arm clevis into the taper

attachment, and then slide the arm clamp

onto the deadman arm, as shown in Figure

16. Do not tighten the mounting cap screws

or arm clevis at this time.

For Product Mfg. Since 1/10 Model SB1269

-7-

PREPARATION

Figure 16. Deadman and arm installation.

Deadman

Clamp Cap

Screw

Deadman

Arm

Clevis

Arm Clamp

Cap Screw

29. Rotate, push in, or pull out the adjustment

cam to adjust the deadman arm so it is as

parallel as possible with the lathe bed in

both the vertical and horizontal plane.

Note:You may have to rotate the deadman arm

so the arm clevis allows the arm to be tilted

in a particular direction.

— To tilt the arm in the vertical plane, rotate

the knurled adjustment cam.

— To tilt the arm in the horizontal plane, slide

the adjustment cam in or out of the deadman

housings.

Figure 18. Saddle gap.

Complete Travel Without

Deadman Clamp Contact

1" Saddle

Safety Gap

28. Using a 3mm hex wrench, loosen the four

locking set screws (Figure 19) that lock the

adjustment cam in position.

24. Using a 6mm hex wrench, loosen the

dovetail lock cap screw at each end of the

taper attachment, as shown in Figure 17.

Figure 19. Deadman arm alignment.

Four Locking

Set Screws

Adjustment

Cam

Clevis

Jam Nut

Figure 17. Taper angle adjustment.

Dovetail Lock

Cap Screw

Taper Angle

Control Knob

Scale

25. Turn the taper angle control knob (Figure

17), so the taper attachment points to zero

degrees as shown on the scale.

26. Re-tighten both dovetail lock cap screws.

27. Slide the deadman clamp along the lathe

way to a position where the saddle will not

contact the clamp when cutting tapers.

There should be approximately 1" of safety

clearance or "saddle safety gap," as shown

in Figure 18. You must double check this

clearance to prevent a deadman clamp

carriage crash.

-8-

For Product Mfg. Since 1/10

Model SB1269 PREPARATION

35. Loosen the four mounting cap screws and

rotate the taper attachment left or right to

correct the alignment (see Figure 21).

Figure 22. Roll pin installation.

Pre-Drilled 6.5mm

Pilot Holes for

Tapered Pins

36. Retighten the taper attachment cap screws,

and double check your parallelism.

37. Using the existing pilot holes in the taper

attachment housing as guides (see Figure

22), drill out both holes with a 19⁄64" drill bit,

and ream both holes with an industrial size

#6 spiral pin reamer deep enough so the

tapered pins ﬁt ﬂush. If you need to remove

the tapered pins for any reason, the internal

pin threads are a metric M6-1.

38. Position and tap-in the tapered pins, so they

will permanently lock the taper attachment

in the current alignment position.

39. Reinstall the lathe splash guard.

33. Setup a knob indicator as shown in Figure

20, so the knob indicator point is against the

top of the dovetailed table.

34. Move the carriage to the other end of the

way, read the knob indicator, and note the

amount of total misalignment in parallelism

between the path of the carriage and the

path of the taper attachment.

— If the knob indicator readings show a tilt

of 0.025" or less between the two extreme

positions of the taper attachment, then the

alignmentisacceptable.GotogotoStep 37.

— If the parallelism is greater than 0.025",

proceed to Step 35.

30. Using a 3mm hex wrench, tighten the

cam set screws and the clevis jam nut (see

Figure 16) when ﬁnished.

31. Using 8mm and 6mm hex wrenches, tighten

the deadman clamp and the arm clamp cap

screws, as shown in Figure 18.

32. Move the carriage so the taper attachment

stops completely at the forward-most

position, as shown Figure 20.

Figure 20. Taper attachment alignment.

Figure 21. Parallelism correction.

Rotate Slightly

to Align

For Product Mfg. Since 1/10 Model SB1269

-9-

PREPARATION

Operation

6. Retighten both dovetail lock cap screws.

7. Begin lathe operations.

When the deadman clamp cap screws are loose,

the deadman clamp slides along the lathe way,

and the taper attachment is disengaged. Normal

lathe turning operations can be conducted.

When the deadman clamp cap screws are

tightened, the deadman clamp is locked to the

lathe way, and the taper attachment is engaged.

At this point tapered turning operations can be

made.

To use the taper attachment:

1. DISCONNECT LATHE FROM POWER!

2. Move the carriage, cross slide, and

compound rest so your turning bit is at your

needed location to begin the tapered cut.

3. Using an 8mm hex wrench, tighten both

deadman cap screws so the deadman clamps

against the lathe bedway, as shown in

Figure 23.

4. Using a 6mm hex wrench, loosen the dovetail

lock cap screw at each end of the taper

attachment, as shown in Figure 24.

Figure 24. Taper angle control knob.

Dovetail

Lock Cap

Screw

Taper Angle Control Knob

Taper Angle

Taper Per/Inch

One inch long tapered

workpiece such as an arbor or pin.

Figure 25. Scale relationship with workpiece.

Figure 23. Deadman clamp location.

Cap Screw

5. Turn the taper angle control knob (see

Figure 24) until you reach the taper angle

or the taper-per-inch setting that you need.

Refer to Figure 25 to select which scale best

suits your needs.

-10-

For Product Mfg. Since 1/10

Model SB1269 OPERATION

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